What level of atropine safe in animal feed?

Atropine is generally not recommended for use in animal feed due to its toxicity and potential side effects. If it must be used, the acceptable levels can vary by species and intended use, and should always be determined based on veterinary guidance. Generally, very low concentrations are used in veterinary medicine, and regulatory agencies may not endorse its use in feed. Always consult a veterinarian or relevant guidelines for safe and legal usage.